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WorksheetsUnit 7 Mock Test
Total questions: 37
Worksheet time: 29mins
A symbiotic relationship that involves organism going after something they both need or want.
competition
predation
commensalism
parasitism
How many organisms in the food chain are only primary consumers?
1
2
3
4
A diagram that shows the amount of energy that moves from one feeding level to another in a food web.
Energy Pyramid
Food Web
Ecosystem
Food Chain
10% of energy is passed from one trophic level to the next when organisms consume eachother. What happens to the other 90% of energy?
It is destroyed.
It is re-captured by the sun.
It is used by organisms at each trophic level for everyday functions.
It is captured by the atmosphere.
In the food web shown, the fox is a...
primary consumer
secondary consumer
tertiary consumer
secondary and tertiary consumer
Hermit crabs live in shells made and then abandoned by snails. This neither harms nor benefits the snails.
Mutualism
Competition
Parasitsm
Commensalism
In this table the time is measured in months. Which statement below best describes the increase in the grass population in the first month?
A decrease in the number of rabbits meaning an increase in the numer of snakes.
The grass population decreased in the first month resulting in a decrease in rabbit population.
The hawk populations are consuming snakes at higher rate then they can reproduce causing a decrease in rabbit populations.
Increase migration of primary consumers.
In this table the time is measured in months. Which statement below best describes the increase in rabbit population between 1.0-1.5 months.
A decrease in the number of hawks meaning an increase in the numer of snakes.
A decrease in number of snakes as a result of two more hawks migrating into the ecosystem.
The hawk populations are consuming snakes at higher rate then they can reproduce causing a decrease in rabbit populations.
Increase migration of secondary consumers.
Drastic changes at the top of the food web can trigger trophic cascades, or domino effects that are felt through many lower trophic levels. The likelihood of a trophic cascade depends on the number of trophic levels in the ecosystem. Think back to the short film we watched about Yellowstone National Park, and how humans removed the wolves in 1920, which caused major changes to lower trophic levels.
Which option below represents trophic levels?
Carnivore, Omnivore, and Herbivore.
Grass, Rabbits, Snakes, and Hawks.
Producers, Primary Consumers, Secondary Consumers, and Tertiary Consumers.
First Level, Second Level, Third Level, and Fourth Level.
Drastic changes at the top of the food web can trigger trophic cascades, or domino effects that are felt through many lower trophic levels. The likelihood of a trophic cascade depends on the number of trophic levels in the ecosystem. Think back to the short film we watched about Yellowstone National Park, and how humans removed the wolves in 1920, which caused major changes to lower trophic levels.
Which example below represents a trophic cascade?
In an aquatic ecosystem, there has been an introduction of a competitor fish that eats plankton along with the trout. The competitor fish is faster and more aggressive and forces the trout population to die out from starvation.
In an aquatic ecosystem, there are golden trout that eat plankton, and the plankton eats algae. The algae is a producer, so it gets it's energy from the sun.
In an aquatic ecosystem, the overfishing of trout has caused an increase in plankton, which are eaten by trout. As a result, there are less populations of algae (producers), which are consumed by plankton.
